The following is the text of Dr. Percy's report:--

Metallurgical Laboratory, Royal School of Mines,
Jermyn Street, London Dec 13 1878.

Dear Sir,

I now send the results of the analytical examination of the specimens
which you submitted to me for that purpose. The examination has been
conducted with the greatest care, in the metallurgical laboratory of the
Royal School of Mines, by Mr. Richard Smith, who, for the last thirty
years, has been constantly engaged in such work; and in whose accuracy I
have absolute confidence. It is impossible that any one should have taken
greater interest in, or have devoted himself with greater earnestness to,
the investigation. I have almost entirely confined myself to a statement
of facts, as I understand that was all you required for the guidance of
his Highness the Khedive.

Section 1.

Examination of the mineral specimens contained in the boxes marked as
under.

(An average representative sample of each specimen, of about six pounds
in weight, was prepared for examination from portions broken off, or
otherwise taken, by Mr. Richard Smith at the Victoria Docks.[EN#2]

No. 1. "Box 22," Quartz from Mugnah (Makna). Quartz coloured black and
red-brown with oxides of iron. These were of two varieties, marked 22a
and 22b respectively.